Ventilator structure



Nov. 9, 1943. s. J. OLSHIN VENTILATOR STRUCTURE '2 Sheets-Sheet 1 Fil ed Oct. 24, 1942 INVENTOR. ,J'mvuzl. 0A SH/A/ Patented Nov. 9, 1943 Q NIT STATES PATENT 3 loF-F IFC A STRUCTURE Samuel]. Olshin, Yonkers, N.'Y.

Application October-'24, 1942., serial no. 463,149

.4 Claims. 101. 98-86) This invention relates generally to ventilator structures with operative 1 dampers and: particularlyto the kind adapted .for'use 'with -underground ammunition magazines, and wherein both masonry and metal parts are being employed.

Oneoi the principal objects-of the present invention is the provision of an especially effective and atthe same time relatively inexpensive venti, lator structure, wherein a substantially solid, weatherandmoisture resisting base is combined with a readily mountable and ole-mountable metal part, which latter includes all of the essential features of a practical "and serviceable ventilator. a 1 r Another object of this-invention resides in the provision of an effective ventilator of the type indicated, and whereinthe essentialsafety features housedin the metalpart thereofinclude a heat-responsive closing damper, with a'damper positionindicator, and fine and coarse grill work shielded against wind and rain by an over-hanging hood. l i I A further objectof this invention resides in the provision of a base composed of a concrete under structure, the upper end ofwhich is covered-by a removable metal top, the latter being securely held in place by means of anchor bolts cast into and extending" slightly-above the concrete, said metal'top forming the frame and support for all of the metal parts employed inthe ventilator structure. J The foregoing and still further objects of the present invention will become more fully apparent from the "following description and the accompanying drawings, forming an essential part thereofiand wherein I Fig. l is a diagrammatical illustration of an and Fig. is a cross section taken on line 5-5 of Fig. 4.

Referring now specifically to Figs. 1 and 2,-

numeral It) denotes the interior reinforced concrete structure of an ammunition magazine, preferably covered with earth II, or built within the ground. Concrete structure I0 terminates in a neck l2 forming the top opening of the magazine, the neck extending partially above the earth covering ll. Cast into the concrete neck material are a plurality of anchor bolts l3, asclearly illustrated in Fig. 5;the upper'ends'ef which extend above the top end of-the masonryl 1 i The-upperend of the neck construction is so shaped as to provide asloping ledge Manda" horizontal'ledge t5, the latter serving-as support for the metal structure of the vent. (See FigsJ'S and 5.) ihismetalstructure consists of an outer frame it, the lower-end ofwhich is provided with ahorizontal flange or ledge ll. from which de pends a vertical rim l8. -j

In thehorizontal flange portionfl iare provided openings for the reception of the r'upper ends of bolts I3, by means of which frame 18 issecurely connected with the'concr'ete portion of the vent}. Resting upon and removably secured to metal flange or ledge were two oppositely disposed bearings I9, which serve for journalling the ends of damper shaft passing through the metal structure of the vent,

' Within outerframemember ls there is disposed an interior framemember N, at the lower end of whichis arranged agrid 22, consisting of a plurality'of stout wire rods setpin a ring,

which is securedto member 2| near its loweren'd mushrbom-shaped hood it, supported by means of braces 2?, whichare attached to extension 24.

' Hood26, is completely closed, except for its'bot-.

' torn end, which latter is open and permitsffree circulation of air passing through the .vent to without. lthwill be observed that the lower edge 1 of hood-it extends substantially below the upper edge of extension 24, in which way rain and wind is prevented from entering the vent interior.

Referring to damper shaft 20, the latter extends through both inner and outer members I6 and 2| of the vent metal structure and supports a damper 28 which is intended to normally assume an open, vertical position; such as indicated in'Fig. 3. The shaft extends beyond the bearings, and at one end of the shaft there is secured a damper position indicator 28 in the form of a flag, and a Weight 29, which is normally held in the full line position shown in Fig. 2 by means of a connection 30, which'includes a fuseable link 3|.

In the event link 3| is subjected to abnormal heat, it will melt and release weight 29, in consequence of which the latter will actuate the damp- One end of connection 39 is. preferably affixed at 32to tapered extension 23.

' features of the present structure is the arrangement of the bearings for the damper shaft, which are secured to the metal ledge or flange I! of frame member [6. Due to their accessibility, the bearings can be readily serviced, lubricated and position indicator secured to the shaft, means connected with the weight for normally holding exchanged if so required. Similarly all other parts carried by theshaft are made easily accessible. I

r The combined masonry and metal structure of the ventilator ,is designed to prevent moisture from settling and deterioration of its components. Thus sloping ledge I Fl of theconcrete neck sheds water readily; metalflange I! completely covers horizontal ledge I 5 of the neck, thereby prevent ing water from penetratinginto the concrete and into the vent interior, and the arrangement of hood 26 tendsto'deflect Water from the metal under-structure. While I have shown and described a specific construction of my invention and have illustrated avent ofa'substantially cylindrical design, it

is quite obvious that its shape .and minor details J may be changed without departing from the scope of my idea, as defined in the annexed claims.

I claim:

1. In a safety ventilator for underground magazines, the combination with a masonry base, of a removable ventilator structure reposing upon the base, anchor bolts extending from the base, said structure including an exterior supporting frame'covering the upper end of the base and being secured thereto by means of said bolts, a portion of said. frame extendingabove the base,

an interior frame within the exterior frame and extending-into the base, bearings supported by the exterior frame, a damper shaft pivoted in the bearings and supporting a damper operative within the interior frame, the damper shaftextending beyond the bearings and being provided with a weight and a damper position indicator, a weight holder provided with a fusible element normally keeping the weight in elevated position,

' andengagin the weight of the shaft for keeping I Y naled in said bearings, and heateresponsive.

at which position the damper is fully open and the indicator stands upright; a-tapered member extending from the exterior supporting frame, a I

screen arranged at the smaller end of the tapered member; a hood covering the latter and a grill formed at the lower end of the interior frame beneath the damper.

2. In a ventilator structure, a concrete base, anchor bolts cast thereinto and extending above its upper end, an outer frame covering and ex-' tending above the latter and beingsecured theretoby said bolts, a pair of bearings supported by, and attached to the base-covering portion of the outer frame, an inner frame extending into the base, a damper shaft passing through the outer and inner frames and being journaledf in the bearings and extending beyond them, a damper supported by said shaft, a weight and a damper the damper in open position, a taperedmember extending from the upper ends of the two frames and having a screen at itssmaller end, a mush- 7 room hood overhanging and fully'covering said tapered member, and grill work closing the lower end of the inner frame.

3. In a combination masonry and metal ventilator, a masonry base, with anchor bolts cast therein and extending beyondits top, a stepped- ,ofi outer metal frame having a flanged lower end set on top of the base, covering the latter and being fastened thereto bysaid bolts, said flanged lower frame end forming a ledge, a pair of oppositely disposed bearings secured .to the ledge and supporting a weighted damper shaft, a damper secured to the shaft, a grill equipped inner frame extending into the base, a'screenedtaper extend 1 ing above the frames, a mushroom hood covering the taper, and means extending from the taper the damper normally open.

substantially cylindrical concrete base having bolts extending from its top, an outer metal frame extending above the base and provided with a ledge covering the top of the base andbeing secured by said bolts, a grill-equipped inner-frame extending into the base, a cone forming the top for both frames, a mushroom hood for the cone, bearings secured to the ledge of the outer'frame,

adamper, provided with a releasable closing weight and a damper position indicatonyjourmeans secured to the cone for normally holding the weight in elevated position, and thereby keep ing the damper open. 4 i

SAMUEL OLSIHN.

4. A ventilator, comprising in combination, a. 

